Nampan พูลพิศ, Theerathammakorn สุภาวดี, and Teekasap สมบัติ. “Efficiency Improvement of Cosmetic Tube Filling Machine by Applying QC Tools”. Thai Industrial Engineering Network Journal 7, no. 1 (June 29, 2021): 32–41. Accessed January 27, 2022. https://ph02.tci-thaijo.org/index.php/ienj/article/view/242056.